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J, N. STONG.

MECHANISM FOR OPENING GATES. No. 402,998.. Patented May 7, 1889."

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J. N. STONG. I

MEUHANISM FOR OPENING GATES. I

NoI 402,998. Patented May 7, 1889.

fnrenor O-Z CJCA A UNITED STATES PATENT OFFICE.

JOHN N. STONG, OF WOODBRIDGE, ONTARIO, CANADA.

MECHANISM FOR OPENING GATES.

SPECIFICATION forming part of Letters latent No. 402,998, dated May 7,1889.

' Application filed February 13, 1889- Serial No. 299,764. (No model.)

To all whom it may concern.-

Be it known that I, JOHN NOAH STONG, farmer, of the village of WVoodbridge, in the county of York, in the Province of Ontario, Canada, have invented certain new and useful Mechanism for Opening Gates, of which the following is a specification.

The object of the invention is to design simple mechanism for unlatching and opening a swinging gate; and it consists, essential y, of simplyoperating mechanism by which the longitudinal movementof a bar shall first raise the latch and then cause the gate to swing open on its pivot, substantially as hereinafter more particularly explained.

Figure 1 is a perspective view showing a gate provided with my improved opening mechanism. Figs. 2 and 3 are enlarged details of the toothed quadrant, rack, and tripping mechanism involvedin my invention.

The drawings illustrate the mechanism by which this desired end is accomplished.

A represents a toothed quadrant bolted or otherwise fixed to the stile B of the gate.

0 is a rack carried in suitable horizontal guides, D, fixed to the post E.

F is a bar resting on top of the rack C and connected to or forming part of the rods G, which extend on either side of the gate and connect with suitably-pivoted levers H, located a sufficient distance from the gate to enable the driver of avehicle to open the said gate without its interfering with his horse. At each end of the rack C, I formalongitudinal slot, I, into which a pin, J, projecting from the rod G or bar F, fits. Two other pins (marked K and L) project from the bar F, and are intended for the purpose, as hereinafter described, of raising the latch M.

N is a lever pivoted on the toothed quadrant A in such a position that one of its ends shall rest against the pin K when the gate is closed, its other end being connected by the cord or chain 0 to the latch M, as indicated in Fig. 1. P is another lever, also pivoted in any suitable manner on the quadrant A in such a position that when the gate is opened and its latch engages with the catch Q on the post B one end of the leverP shall be behind the projecting pin L, the other end of the lever being connected by suitable means to the cord or chain. 0, as indicated.

Having now described the mechanical parts involved in my invention, I shall proceed to explain briefly their operation, by which the gate is first unlatched and then swung open.

Figs. 1 and 2 show the position in which the operating mechanism appears when the gate is closed. By pushing the rod G in the direction indicated by the arrow the pin K pushes against the end of the lever N, thereby causing the said lever to pull upon the cord or chain 0, and thus raise the latch M. As the rod G is only connected to the rack O by means of the pin or pins J, working in the slot or slots I, the said rack will remain Sta-- tionary until the pin or pins J reach the op posite end of the said slot, by which time the latch M is raised clear of its catch. The rack will then move, and as it engages with the teeth on the quadrant A it will cause the gate to swing on its hinge or pivot. When the rack begins to move, the pin K slips off the end of the lever N, and the latch resumes its normal position ready to engage with the catch Q when the gate is fully opened. The lever P, the end of which is at that time behind the pin L, is ready to be rocked on its pivot when the rod Gis moved in the reverse direction to that in which it was moved when the gate was opened. As the pins J must travel to the opposite end of the slots I before the rack O is moved, the latch M is raised clear of the catch Q before the gate is once more turned on its pivot.

From this description it will be seen that the mechanism I employ is of the simplest kind, and may be readily placed in position by any ordinarily handy man.

I should mention that when the gate is not pivoted on the center of its stile, as indicated in the drawings, the pattern of the quadrant A must be somewhat altered, so that its center shall correspond with the center of the pivot or hinge of the gate.

\Vhat I claim as my invention is- 1. A rod, G, fixed to or forming part of the bar F, adjustably connected to the rack C, and a pin, K, projecting from the bar F, in combination with the lever N, pivoted on the quadrant A, and connected to the latch M by the cord or chain 0, substantially as and for the purpose specified. I

2. A rod, G, fixed to or forming part of the bar F, and a pin, L, projecting from the bar pivoted 011 the quadrant A, and connected to F, in combination with the lever P, pivoted on the latch M by the cord or chain 0, substanto the quadrant A, and connected to the latch M tially as and for the purpose specified.

by the cord or chain 0, substantially as and Toronto, February 2, 1889.

5 for the purpose specified. JOHN N. STONG.

3. A rod, G, fixed to or forming part of the In presence ofbar F, and pins K and L, projecting from the W. B. LAWSON, bar F, in combination with levers N and P, II. II. DEWART. 

